/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/IDatasmithSceneElements.h
Add a metadata to the scene There should be only one metadata per Datasmith element (the element associated with the metadata)
void AddMetaData ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithMetaDataElement](API\Runtime\DatasmithCore\IDatasmithMetaDataElement) > & InMetaData )